Reduction of torque ripple in induction motor drives using an advanced hybrid PWM technique

Kaushik Basu, J. S Siva Prasad, G. Narayanan, Harish K. Krishnamurthy, Raja Ayyanar

Research output: Contribution to journalArticlepeer-review

120 Scopus citations


A voltage source inverter-fed induction motor produces a pulsating torque due to application of nonsinusoidal voltages. Torque pulsation is strongly influenced by the pulsewidth modulation (PWM) method employed. Conventional space vector PWM (CSVPWM) is known to result in less torque ripple than sine-triangle PWM. This paper aims at further reduction in the pulsating torque by employing advanced bus-clamping switching sequences, which apply an active vector twice in a subcycle. This paper proposes a hybrid PWM technique which employs such advanced bus-clamping sequences in conjunction with a conventional switching sequence. The proposed hybrid PWM technique is shown to reduce the torque ripple considerably over CSVPWM along with a marginal reduction in current ripple.

Original languageEnglish (US)
Article number5290087
Pages (from-to)2085-2091
Number of pages7
JournalIEEE Transactions on Industrial Electronics
Issue number6
StatePublished - Jun 2010


  • Harmonic distortion
  • Induction motor drives
  • Pulsewidth modulated inverters
  • Pulsewidth modulation (PWM)
  • Space vector
  • Switching sequence
  • Torque pulsation

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering


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